li-po in hard case

[Batfish]

MetalMan - I think your points can be valid when considering very high-powered setups in bashing/racing situations, but it's almost invalid for normal setups in racing conditions.
If you're running a brushed or brushless setup appropriate for your racing environment, these packs would just about never be pushed to their continuous maximum, and barely ever have peak currents near their maximum capacity.
I'm pretty sure that Orion and Peak did not design these lipo packs with high-voltage brushless systems in extreme conditions in mind. As far as I am aware, they were designed to replace 6-cell nimh battery packs for 1/10th scale racing vehicles. In this application, they will exceed the nimh packs in performance and capability.